Bump actions/checkout from 3 to 4 (#935)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to
4.
- [Release notes](https://github.com/actions/checkout/releases)
-
[Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

.github/workflows/deploy-website.yml

@@ -16,7 +16,7 @@ jobs:
       run:
         working-directory: ./website
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v3